best bang for the buck portable charger . There are already a ton of positive and useful reviews for this product . buy without looking further .

I am very happy with the product. Yes the data cable is short but over all best bank in this price.
Charges my Z ultra twice and works like a charm

1) very small and easy to use.
2) It takes 4.41hrs for its first full charging.
3) I charged my Nokia Lumia 525 (1430 mah battery) i takes 1.35hrs to charge from 23%-100%, i used the phone while its charging, good performance, and it takes just 47min when unused, It takes 35% of its power to charge my phone so i can use it for more than 2 times.
4) it can detect the device and starts charging automatically when you connect to it, and after removing the device it automatically offs after a few...

For this price, it is probably the best power bank in the market. If you travel a lot or have lots of electricity issues at home, nothing can replace this.

PROS:
1. The power backup is immense, it can charge your phone 4-5 times, enough for 2-3 days of use without bothering for power supply.
2. It'll suit you even if you have multiple gadgets like a cell phone, tablets and camera. (Like maybe on a holiday trip when you travel a lot or go camping)
3. It can actually solve the problem for a co...

I am using this product since last couple of month and find very useful with very low cost. On top of this, very good service from Flipkart...

Best in this price segment, most reliable. loving it.
Portable enough to carry it easily.
Enough to charge a 2500 mAh for 3-4 times
Con, takes too much time to charge, but then again, The capacity answers it all.

One of the best battery banks with great backup. Totally worth the money and sleek looking. Had been using this for more than 2 months now and no complaints.

The 10400mAh power from Mi is the best in the price range. I currently use two different power banks
1. The Nokia DC-16 2200mAh (which i carry around in my pocket)
2. The current product Mi 10400mAh (which stays in my Laptop bag)

Pros:
It is the best for its price range
Looks decent with the metal body
Full Charge in about 6-7hrs (all power banks have the similar range)
Charges my Nexus4, three times easily. or my Nokia power bank four times with ease.


Cons:
A bit bulky, Feels heavy ...

It;s a great product i had buyed mi10400mah oct 2014, now feb 2015 it is well working
and value for money and it is pretty good product

The product is good and worth its price. After it is charged completely it can give 4 full charges to my Moto G(2nd Gen) and 1.2(approx) charges to my iPad!
Delivery was good!
Packaging was awesome. Un-boxing is always a fun.
It should had come with a 2A/5V charging adapter becoz charging it with motorola charger(0.5A/5V) takes almost 1 complete day.
Overall Satisfied with it!